DOCSLIB.ORG

Micropaleontology and Isotope Stratigraphy of the Upper Aptian to Lower Cenomanian (~114-98 Ma) in ODP Site 763, Exmouth Plateau, NW Australia

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Micropaleontology and Isotope Stratigraphy of the Upper Aptian to Lower Cenomanian (~114-98 Ma) in ODP Site 763, Exmouth Plateau, NW Australia University of Massachusetts Amherst ScholarWorks@UMass Amherst Masters Theses Dissertations and Theses July 2016 Micropaleontology and Isotope Stratigraphy of the Upper Aptian to Lower Cenomanian (~114-98 Ma) In ODP Site 763, Exmouth Plateau, NW Australia Ali Alibrahim University of Massachusetts Amherst Follow this and additional works at: https://scholarworks.umass.edu/masters_theses_2 Part of the Biogeochemistry Commons, Geochemistry Commons, Geology Commons, Paleobiology Commons, Paleontology Commons, Sedimentology Commons, and the Stratigraphy Commons Recommended Citation Alibrahim, Ali, "Micropaleontology and Isotope Stratigraphy of the Upper Aptian to Lower Cenomanian (~114-98 Ma) In ODP Site 763, Exmouth Plateau, NW Australia" (2016). Masters Theses. 361. https://doi.org/10.7275/8392568 https://scholarworks.umass.edu/masters_theses_2/361 This Open Access Thesis is brought to you for free and open access by the Dissertations and Theses at ScholarWorks@UMass Amherst. It has been accepted for inclusion in Masters Theses by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. MICROPALEONTOLOGY AND ISOTOPE STRATIGRAPHY OF THE UPPER APTIAN TO LOWER CENOMANIAN (~114-98 MA) IN ODP SITE 763, EXMOUTH PLATEAU, NW AUSTRALIA A Thesis Presented by ALI H. ALIBRAHIM Submitted to the Graduate School of the University of Massachusetts Amherst in partial fulfillment of the requirements for the degree of MASTERS OF SCIENCE May 2016 GEOSCIENCES 1 MICROPALEONTOLOGY AND ISOTOPE STRATIGRAPHY OF THE UPPER APTIAN TO LOWER CENOMANIAN (~114-98 MA) IN ODP SITE 763, EXMOUTH PLATEAU, NW AUSTRALIA A Thesis Presented by ALI H. ALIBRAHIM Approved as to style and content by: ___________________________________________________ R. Mark Leckie, Chair ___________________________________________________ Steven Petsch, Member ___________________________________________________ Robert M. DeConto, Member ________________________________________________ Steven Petsch Graduate Program Director, Geosciences Department 2 DEDICATION For my wife and daughter, for filling my life with love and happiness. For my mother and father who raised me up, taught me through my early years and encouraged me to learn everyday. iii ACKNOWLEDGEMENTS I thank Professor Mark Leckie for his kind leadership and guidance and for all the educational discussions and seminars he conducted. I also thank every member of the micropaleontology lab for helping me through all the challenges, Andy Fraass, Renata DeMello, Serena Dameron, Amanda Parker, Chris Lowery and Khalifa Elderbak. I appreciate the support of my committee members Professors Steven Petsch and Rob DeConto. My research benefited greatly from the Bio-geochmistry class of Professor Steven Petsch and the isotope geochemistry class of Professor Stephen Burns. I thank Dr. Geraint Wyn ap Gwylim Hughes for introducing me to the field of micropaleontology in Saudi Aramco. I thank the people at Saudi Aramco who approved my scholarship and trusted me to successfully conduct long term research in micropaleontology. iv ABSTRACT MICROPALEONTOLOGY AND ISOTOPE STRATIGRAPHY OF THE UPPER APTIAN TO LOWER CENOMANIAN (~114-98 MA) IN ODP SITE 763, EXMOUTH PLATEAU, NW AUSTRALIA MAY, 2016 ALI H. ALIBRAHIM, B.Sc., UNIVERSITY OF LEEDS M.S., UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Professor R. Mark Leckie The biostratigraphy and isotope stratigraphy of the upper Aptian to lower Cenomanian interval including oceanic anoxic events OAE1b, 1c and 1d are investigated in ODP Site 763, drilled on the Exmouth Plateau offshore northwest Australia. Benthic foraminifera suggest that Site 763 was situated in outer neritic to upper bathyal water depths (~150- 600 m). OAEs of the Atlantic basin and Tethys are typically associated with organic carbon-rich black shales and 13C excursions. However, OAEs at this high latitude site correlate with ocean acidificationδ and/or pyrite formation under anoxic conditions rather than black shales. Ocean acidification maybe responsible for sporadic low abundances of planktic foraminifera compared to radiolarians and benthic foraminifera associated with increased volcanogenic CO2 production during the formation of the Southern and Central Kerguelen Plateaus. Sea surface temperature may have cooled to 11°C in the late Aptian but increased gradually during the Albian. The Aptian/Albian boundary is placed at a negative carbon isotope excursion associated with the lowest occurrence of Microhedbergella renilaevis, typically found within the Niveau Kilian black shale of OAE1b. Third-order sea level cycles, particularly in the middle Albian, produced cyclic changes in the abundance of inoceramid prisms that increased during inferred times of falling sea level. The late Albian OAE1c and OAE1d coincide with horizons of intense pyritization and the absence of all biocomponents suggesting the v development of euxinia. Warm Tethyan waters reached the Exmouth Plateau during the latest Albian based on the presence of thermocline dwelling keeled planktic foraminifera including Planomalina buxtorfi. vi TABLE OF CONTENTS Page ACKNOWLEDGEMENTS ...................................................................................................................... iv ABSTRACT ................................................................................................................................................. v LIST OF TABLES...................................................................................................................................... ix LIST OF FIGURES ..................................................................................................................................... x CHAPTER 1. INTRODUCTION .................................................................................................................................. 1 1.2 The Aptian/Albian OAE1b ............................................................................................. 6 1.3 Cooling in the late Aptian and warming across the Aptian/Albian boundary ........................................................................................................................ 8 1.4 The early late Albian OAE1c ....................................................................................... 10 1.5 The latest Albian OAE1d .............................................................................................. 10 1.6 Study Site ........................................................................................................................... 11 1.7 Research Questions ....................................................................................................... 14 2. MATERIALS AND METHODS ....................................................................................................... 15 2.1 The micropaleontology survey ................................................................................. 15 2.2 The isotope survey ......................................................................................................... 16 2.3 Paleotemperature Calculation ................................................................................... 17 2.4 Age Model .......................................................................................................................... 17 3. RESULTS AND DISCUSSION......................................................................................................... 19 3.1 Age Model .......................................................................................................................... 19 3.2 Micropaleontology ......................................................................................................... 20 3.3 Isotope Stratigraphy ...................................................................................................... 25 3.4 Isotopic composition ..................................................................................................... 25 3.5 Temperature Calculations ........................................................................................... 26 3.6 Isotopic Gradients .......................................................................................................... 26 3.7 Chronostratigraphy ....................................................................................................... 30 3.7.1 OAE1b Kilian Event (Aptian/Albian boundary) ............................... 30 3.7.2 The Albian Sub-stage and Albian/Cenomanian boundary ........... 33 3.8 Albian Oceanic Anoxic Events ................................................................................... 35 3.9 Paleoenvironment .......................................................................................................... 40 3.9.1 Micropaleontology ....................................................................................... 40 3.9.2 Stable Isotope Record ................................................................................. 46 3.10 Comparison of Isotope Records of Bulk Carbonate to Bulk Fine Fraction Carbonates and Benthic Foraminifera .......................................... 53 3.10.1 Carbon Isotopes .......................................................................................... 53 vii 3.10.2 Oxygen Isotopes ......................................................................................... 54 3.11 Paleoenvironment across the Aptian/Albian OAE1b. ................................... 59
Load more

Recommended publications
  • Poropat Et Al 2017 Reappraisal Of
    Alcheringa For Peer Review Only Reappraisal of Austro saurus mckillopi Longman, 1933 from the Allaru Mudstone of Queensland, Australia’s first named Cretaceous sauropod dinosaur Journal: Alcheringa Manuscript ID TALC-2017-0017.R1 Manuscript Type: Standard Research Article Date Submitted by the Author: n/a Complete List of Authors: Poropat, Stephen; Swinburne University of Technology, Department of Chemistry and Biotechnology; Australian Age of Dinosaurs Natural History Museum Nair, Jay; University of Queensland, Biological Sciences Syme, Caitlin; University of Queensland, Biological Sciences Mannion, Philip D.; Imperial College London, Earth Science and Engineering Upchurch, Paul; University College London, Earth Sciences, Hocknull, Scott; Queensland Museum, Geosciences Cook, Alex; Queensland Museum, Palaeontology & Geology Tischler, Travis; Australian Age of Dinosaurs Natural History Museum Holland, Timothy; Kronosaurus Korner <i>Austrosaurus</i>, Dinosauria, Sauropoda, Titanosauriformes, Keywords: Australia, Cretaceous, Gondwana URL: http://mc.manuscriptcentral.com/talc E-mail: [email protected] Page 1 of 126 Alcheringa 1 2 3 4 5 6 7 1 8 9 1 Reappraisal of Austrosaurus mckillopi Longman, 1933 from the 10 11 12 2 Allaru Mudstone of Queensland, Australia’s first named 13 14 For Peer Review Only 15 3 Cretaceous sauropod dinosaur 16 17 18 4 19 20 5 STEPHEN F. POROPAT, JAY P. NAIR, CAITLIN E. SYME, PHILIP D. MANNION, 21 22 6 PAUL UPCHURCH, SCOTT A. HOCKNULL, ALEX G. COOK, TRAVIS R. TISCHLER 23 24 7 and TIMOTHY HOLLAND 25 26 27 8 28 29 9 POROPAT , S. F., NAIR , J. P., SYME , C. E., MANNION , P. D., UPCHURCH , P., HOCKNULL , S. A., 30 31 10 COOK , A. G., TISCHLER , T.R.
    [Show full text]
  • SVP's Letter to Editors of Journals and Publishers on Burmese Amber And
    Society of Vertebrate Paleontology 7918 Jones Branch Drive, Suite 300 McLean, VA 22102 USA Phone: (301) 634-7024 Email: [email protected] Web: www.vertpaleo.org FEIN: 06-0906643 April 21, 2020 Subject: Fossils from conflict zones and reproducibility of fossil-based scientific data Dear Editors, We are writing you today to promote the awareness of a couple of troubling matters in our scientific discipline, paleontology, because we value your professional academic publication as an important ‘gatekeeper’ to set high ethical standards in our scientific field. We represent the Society of Vertebrate Paleontology (SVP: http://vertpaleo.org/), a non-profit international scientific organization with over 2,000 researchers, educators, students, and enthusiasts, to advance the science of vertebrate palaeontology and to support and encourage the discovery, preservation, and protection of vertebrate fossils, fossil sites, and their geological and paleontological contexts. The first troubling matter concerns situations surrounding fossils in and from conflict zones. One particularly alarming example is with the so-called ‘Burmese amber’ that contains exquisitely well-preserved fossils trapped in 100-million-year-old (Cretaceous) tree sap from Myanmar. They include insects and plants, as well as various vertebrates such as lizards, snakes, birds, and dinosaurs, which have provided a wealth of biological information about the ‘dinosaur-era’ terrestrial ecosystem. Yet, the scientific value of these specimens comes at a cost (https://www.nytimes.com/2020/03/11/science/amber-myanmar-paleontologists.html). Where Burmese amber is mined in hazardous conditions, smuggled out of the country, and sold as gemstones, the most disheartening issue is that the recent surge of exciting scientific discoveries, particularly involving vertebrate fossils, has in part fueled the commercial trading of amber.
    [Show full text]
  • Isabel Clifton Cookson
    1 The first Australian palynologist: Isabel Clifton Cookson 2 (1893–1973) and her scientific work 3 JAMES B. RIDING AND MARY E. DETTMANN 4 5 RIDING, J.B. & DETTMANN, M.E., The first Australian palynologist: Isabel Clifton 6 Cookson (1893–1973) and her scientific work. Alcheringa. 7 8 Isabel Clifton Cookson (1893–1973) of Melbourne, Australia, was one of that country’s 9 first professional woman scientists. She is remembered as one of the most eminent 10 palaeontologists of the twentieth century and had a distinguished research career of 58 11 years, authoring or co-authoring 93 scientific publications. Isabel worked with great 12 distinction on modern and fossil plants, and pioneered palynology in Australia. She was a 13 consumate taxonomist and described, or jointly described, a prodigious total of 110 14 genera, 557 species and 32 subspecific taxa of palynomorphs and plants. Cookson was a 15 trained biologist, and initially worked as a botanist during the 1920s. At the same time she 16 became interested in fossil plants and then, Mesozoic–Cenozoic terrestrial (1940s–1950s) 17 and aquatic (1950s–1970s) palynomorphs. Cookson’s research into the late Silurian–Early 18 Devonian plants of Australia and Europe, particularly the Baragwanathia flora, between 19 the 1920s and the 1940s was highly influential in the field of early plant evolution. The 20 fossil plant genus Cooksonia was named for Isabel in 1937 by her principal mentor in 21 palaeobotany, Professor William H. Lang. From the 1940s Cookson focussed on Cenozoic 1 22 floras and, with her students, elucidated floral affinities by comparative analyses of 23 micromorphology, anatomy and in situ pollen/spores between fossil and extant taxa.
    [Show full text]
  • Dornbos.Web.CV
    Stephen Quinn Dornbos Associate Professor and Department Chair Department of Geosciences University of Wisconsin-Milwaukee Milwaukee, WI 53201-0413 Phone: (414) 229-6630 Fax: (414) 229-5452 E-mail: [email protected] http://uwm.edu/geosciences/people/dornbos-stephen/ EDUCATION 2003 Ph.D., Geological Sciences, University of Southern California, Los Angeles, CA. 1999 M.S., Geological Sciences, University of Southern California, Los Angeles, CA. 1997 B.A., Geology, The College of Wooster, Wooster, OH. ADDITIONAL EDUCATION 2002 University of Washington, Summer Marine Invertebrate Zoology Course, Friday Harbor Laboratories. 1997 Louisiana State University, Summer Field Geology Course. PROFESSIONAL EXPERIENCE 2017-Present Department Chair, Department of Geosciences, University of Wisconsin-Milwaukee. 2010-Present Associate Professor, Department of Geosciences, University of Wisconsin-Milwaukee. 2004-2010 Assistant Professor, Department of Geosciences, University of Wisconsin-Milwaukee. 2012-Present Adjunct Curator, Geology Department, Milwaukee Public Museum. 2004-Present Curator, Greene Geological Museum, University of Wisconsin- Milwaukee. 2003-2004 Postdoctoral Research Fellow, Department of Earth Sciences, University of Southern California. 2002 Research Assistant, Invertebrate Paleontology Department, Natural History Museum of Los Angeles County. EDITORIAL POSITIONS 2017-Present Editorial Board, Heliyon. 2015-Present Board of Directors, Coquina Press. 2014-Present Commentaries Editor, Palaeontologia Electronica. 2006-Present Associate Editor, Palaeontologia Electronica. Curriculum Vitae – Stephen Q. Dornbos 2 RESEARCH INTERESTS 1) Evolution and preservation of early life on Earth. 2) Evolutionary paleoecology of early animals during the Cambrian radiation. 3) Geobiology of microbial structures in Precambrian–Cambrian sedimentary rocks. 4) Cambrian reef evolution, paleoecology, and extinction. 5) Exceptional fossil preservation. HONORS AND AWARDS 2013 UWM Authors Recognition Ceremony. 2011 Full Member, Sigma Xi.
    [Show full text]
  • Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, South-West Libya
    This is a repository copy of Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, south-west Libya. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/125997/ Version: Accepted Version Article: Abuhmida, F.H. and Wellman, C.H. (2017) Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, south-west Libya. Palynology, 41. pp. 31-56. ISSN 0191-6122 https://doi.org/10.1080/01916122.2017.1356393 Reuse Items deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ Palynology of the Middle Ordovician Hawaz Formation in the Murzuq Basin, southwest Libya Faisal H. Abuhmidaa*, Charles H. Wellmanb aLibyan Petroleum Institute, Tripoli, Libya P.O. Box 6431, bUniversity of Sheffield, Department of Animal and Plant Sciences, Alfred Denny Building, Western Bank, Sheffield, S10 2TN, UK Twenty nine core and seven cuttings samples were collected from two boreholes penetrating the Middle Ordovician Hawaz Formation in the Murzuq Basin, southwest Libya.
    [Show full text]
  • La Brea and Beyond: the Paleontology of Asphalt-Preserved Biotas
    La Brea and Beyond: The Paleontology of Asphalt-Preserved Biotas Edited by John M. Harris Natural History Museum of Los Angeles County Science Series 42 September 15, 2015 Cover Illustration: Pit 91 in 1915 An asphaltic bone mass in Pit 91 was discovered and exposed by the Los Angeles County Museum of History, Science and Art in the summer of 1915. The Los Angeles County Museum of Natural History resumed excavation at this site in 1969. Retrieval of the “microfossils” from the asphaltic matrix has yielded a wealth of insect, mollusk, and plant remains, more than doubling the number of species recovered by earlier excavations. Today, the current excavation site is 900 square feet in extent, yielding fossils that range in age from about 15,000 to about 42,000 radiocarbon years. Natural History Museum of Los Angeles County Archives, RLB 347. LA BREA AND BEYOND: THE PALEONTOLOGY OF ASPHALT-PRESERVED BIOTAS Edited By John M. Harris NO. 42 SCIENCE SERIES NATURAL HISTORY MUSEUM OF LOS ANGELES COUNTY SCIENTIFIC PUBLICATIONS COMMITTEE Luis M. Chiappe, Vice President for Research and Collections John M. Harris, Committee Chairman Joel W. Martin Gregory Pauly Christine Thacker Xiaoming Wang K. Victoria Brown, Managing Editor Go Online to www.nhm.org/scholarlypublications for open access to volumes of Science Series and Contributions in Science. Natural History Museum of Los Angeles County Los Angeles, California 90007 ISSN 1-891276-27-1 Published on September 15, 2015 Printed at Allen Press, Inc., Lawrence, Kansas PREFACE Rancho La Brea was a Mexican land grant Basin during the Late Pleistocene—sagebrush located to the west of El Pueblo de Nuestra scrub dotted with groves of oak and juniper with Sen˜ora la Reina de los A´ ngeles del Rı´ode riparian woodland along the major stream courses Porciu´ncula, now better known as downtown and with chaparral vegetation on the surrounding Los Angeles.
    [Show full text]
  • Alcheringa: an Australasian Journal of Palaeontology
    This article was downloaded by:[University Of Oregon] On: 3 September 2007 Access Details: [subscription number 770397526] Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Alcheringa: An Australasian Journal of Palaeontology Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t770322720 Growth, decay and burial compaction of Dickinsonia, an iconic Ediacaran fossil Online Publication Date: 01 September 2007 To cite this Article: Retallack, Gregory J. (2007) 'Growth, decay and burial compaction of Dickinsonia, an iconic Ediacaran fossil', Alcheringa: An Australasian Journal of Palaeontology, 31:3, 215 - 240 To link to this article: DOI: 10.1080/03115510701484705 URL: http://dx.doi.org/10.1080/03115510701484705 PLEASE SCROLL DOWN FOR ARTICLE Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article maybe used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.
    [Show full text]
  • Young Publication List
    1 Publication List to 2020 – G.C. Young [194 items] [# major monographs, edited books and volumes; *reviews, articles/abstracts, internal/confidential reports] In Review 194. Zhu Y., Giles S., Young G., Hu Y., Zhu M., Bazzi M., Ahlberg P. & Lu J. [In Review]. Endocast and bony labyrinth of a stem gnathostome shed light on the earliest diversification of jawed vertebrates. Current Biology. 2020 193. Young GC & Burrow, CJ 2020. Late Devonian antiarch remains (placoderm fish) from the Gilberton Formation, north Queensland. Memoirs of the Queensland Museum – Nature [in press] 192. Young GC, & Lu J. 2020. Asia-Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations. Journal of Palaeogeography. https://doi.org/10.1186/s42501-020- 00057-x 2019 191. Young GC, Dunstone RL, Ollerenshaw PJ, Lu J & Crook B 2019. New information on the giant Devonian lobe-finned fish Edenopteron from the New South Wales south coast. Australian Journal of Earth Sciences. DOI: https://doi.org/10.1080/08120099.2019.1651769 190. Hu YZ, Young, GC, Lu, J. 2019. The Upper Devonian tetrapodomorph Gogonasus andrewsae Long 1985 from Western Australia: reconstruction of the shoulder girdle and operculum using X-ray micro-computed tomography. Palaeoworld. DOI: https://doi.org/10.1016/j.palwor.2019.07.008 189. Burrow CJ, Turner S, Trinajstic K & Young GC 2019. Late Silurian vertebrate microfossils from the Carnarvon Basin, Western Australia. Alcheringa DOI: https://doi.org/10.1080/03115518.2019.1566496 188. Dunstone RL & Young GC 2019. New Devonian plant fossil occurrences on the New South Wales south coast: geological implications. Australian Journal of Earth Sciences.
    [Show full text]
  • Micropaleontology of the Lower Mesoproterozoic Roper Group, Australia, and Implications for Early Eukaryotic Evolution
    Micropaleontology of the Lower Mesoproterozoic Roper Group, Australia, and Implications for Early Eukaryotic Evolution The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Javaux, Emmanuelle J., and Andrew H. Knoll. 2017. Micropaleontology of the Lower Mesoproterozoic Roper Group, Australia, and Implications for Early Eukaryotic Evolution. Journal of Paleontology 91, no. 2 (March): 199-229. Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:41291563 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA Journal of Paleontology, 91(2), 2017, p. 199–229 Copyright © 2016, The Paleontological Society. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/ licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. 0022-3360/16/0088-0906 doi: 10.1017/jpa.2016.124 Micropaleontology of the lower Mesoproterozoic Roper Group, Australia, and implications for early eukaryotic evolution Emmanuelle J. Javaux,1 and Andrew H. Knoll2 1Department of Geology, UR Geology, University of Liège, 14 allée du 6 Août B18, Quartier Agora, Liège 4000, Belgium 〈[email protected]〉 2Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA 〈[email protected]〉 Abstract.—Well-preserved microfossils occur in abundance through more than 1000 m of lower Mesoproterozoic siliciclastic rocks composing the Roper Group, Northern Territory, Australia.
    [Show full text]
  • Matthew Carl Lamanna
    Curriculum Vitae Matthew Carl Lamanna Assistant Curator Section of Vertebrate Paleontology Carnegie Museum of Natural History 4400 Forbes Avenue Pittsburgh, Pennsylvania 15213-4080 (412) 578-2696 (Office) (412) 622-8837 (Fax) Email: [email protected] Internet: http://www.carnegiemnh.org/vp/lamanna.html Education 2004 Ph.D., University of Pennsylvania, Department of Earth and Environmental Science. 1999 M.Sc., University of Pennsylvania, Department of Earth and Environmental Science. 1997 B.Sc., Hobart College, Departments of Geoscience and Biology, cum laude. Research Interests Mesozoic (principally Cretaceous) vertebrate faunas, paleoecology, and paleobiogeography; non-avian and avian dinosaur anatomy, systematics, and phylogeny. Academic and Professional Positions 2013–present Research Associate, Cleveland Museum of Natural History. 2012–present Principal Investigator and Project Director, Antarctic Peninsula Paleontology Project (AP3). 2005–present Adjunct Assistant Professor, Department of Geology and Planetary Science, University of Pittsburgh. 2004–present Assistant Curator, Section of Vertebrate Paleontology, Carnegie Museum of Natural History. 1999–present Paleontologist, Bahariya Dinosaur Project. 1997–present Research Associate, Academy of Natural Sciences of Drexel University (Philadelphia). 1997–1998 Exhibit Design Consultant, Dinosaur Hall, Academy of Natural Sciences (Philadelphia). 1995 Research Assistant, University of New Orleans Lance Dinosaur Project. Field Experience 2016 Unnamed formation, Robertson Island,
    [Show full text]
  • Sepkoski, J.J. 1992. Compendium of Fossil Marine Animal Families
    MILWAUKEE PUBLIC MUSEUM Contributions . In BIOLOGY and GEOLOGY Number 83 March 1,1992 A Compendium of Fossil Marine Animal Families 2nd edition J. John Sepkoski, Jr. MILWAUKEE PUBLIC MUSEUM Contributions . In BIOLOGY and GEOLOGY Number 83 March 1,1992 A Compendium of Fossil Marine Animal Families 2nd edition J. John Sepkoski, Jr. Department of the Geophysical Sciences University of Chicago Chicago, Illinois 60637 Milwaukee Public Museum Contributions in Biology and Geology Rodney Watkins, Editor (Reviewer for this paper was P.M. Sheehan) This publication is priced at $25.00 and may be obtained by writing to the Museum Gift Shop, Milwaukee Public Museum, 800 West Wells Street, Milwaukee, WI 53233. Orders must also include $3.00 for shipping and handling ($4.00 for foreign destinations) and must be accompanied by money order or check drawn on U.S. bank. Money orders or checks should be made payable to the Milwaukee Public Museum. Wisconsin residents please add 5% sales tax. In addition, a diskette in ASCII format (DOS) containing the data in this publication is priced at $25.00. Diskettes should be ordered from the Geology Section, Milwaukee Public Museum, 800 West Wells Street, Milwaukee, WI 53233. Specify 3Y. inch or 5Y. inch diskette size when ordering. Checks or money orders for diskettes should be made payable to "GeologySection, Milwaukee Public Museum," and fees for shipping and handling included as stated above. Profits support the research effort of the GeologySection. ISBN 0-89326-168-8 ©1992Milwaukee Public Museum Sponsored by Milwaukee County Contents Abstract ....... 1 Introduction.. ... 2 Stratigraphic codes. 8 The Compendium 14 Actinopoda.
    [Show full text]
  • Paleoecology of the Greater Phyllopod Bed Community, Burgess Shale ⁎ Jean-Bernard Caron , Donald A
    Available online at www.sciencedirect.com Palaeogeography, Palaeoclimatology, Palaeoecology 258 (2008) 222–256 www.elsevier.com/locate/palaeo Paleoecology of the Greater Phyllopod Bed community, Burgess Shale ⁎ Jean-Bernard Caron , Donald A. Jackson Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada M5S 3G5 Accepted 3 May 2007 Abstract To better understand temporal variations in species diversity and composition, ecological attributes, and environmental influences for the Middle Cambrian Burgess Shale community, we studied 50,900 fossil specimens belonging to 158 genera (mostly monospecific and non-biomineralized) representing 17 major taxonomic groups and 17 ecological categories. Fossils were collected in situ from within 26 massive siliciclastic mudstone beds of the Greater Phyllopod Bed (Walcott Quarry — Fossil Ridge). Previous taphonomic studies have demonstrated that each bed represents a single obrution event capturing a predominantly benthic community represented by census- and time-averaged assemblages, preserved within habitat. The Greater Phyllopod Bed (GPB) corresponds to an estimated depositional interval of 10 to 100 KA and thus potentially preserves community patterns in ecological and short-term evolutionary time. The community is dominated by epibenthic vagile deposit feeders and sessile suspension feeders, represented primarily by arthropods and sponges. Most species are characterized by low abundance and short stratigraphic range and usually do not recur through the section. It is likely that these are stenotopic forms (i.e., tolerant of a narrow range of habitats, or having a narrow geographical distribution). The few recurrent species tend to be numerically abundant and may represent eurytopic organisms (i.e., tolerant of a wide range of habitats, or having a wide geographical distribution).
    [Show full text]